This was the closing price per share of Common Stock on the last preceding trading date prior to the date that the Stock Purchase Plan units vested (which was on a weekend) and were converted into shares of Common Stock.

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2)

The price set forth in this column represents the market price of Common Stock on the date that Stock Purchase Plan units vested and therefore the date that additional shares of Common Stock relating to dividends (which accrued during the period from the date the units were acquired and the vesting date) were earned.

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3)

Upon vesting, Stock Purchase Plan units convert into shares of Common Stock on a 1-for-1 basis.

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4)

This was the closing price per share of Common Stock on the date that the Stock Purchase Plan units were acquired (05/15/2007).